Shpak, A. A.
Guekht, A. B.
Druzhkova, T. A.
Zinchuk, M. S.
Gulyaeva, N. V.
Article History
Received: 1 November 2019
Revised: 15 November 2019
Accepted: 19 November 2019
First Online: 11 June 2020
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interest. The authors declared no conflicts of interest.
: Informed consent. All subjects gave informed consent to participate in the study.